Extract view from ConsoleInsights

In preparation to applying UI Engineering vision to console insights,
replace all view-like methods with functions outside the component.
Next steps will be to deal with imperative DOM manipulations,
clean up state manipulation, then finally convert to Widget.

Bug: 407751694
Change-Id: I6299e0895089b64bfd3d90f485e2d7edff962bf3
BYPASS_LARGE_CHANGE_WARNING: Simple code move mostly.
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/7106268
Auto-Submit: Piotr Paulski <piotrpaulski@chromium.org>
Reviewed-by: Wolfgang Beyer <wolfi@chromium.org>
Reviewed-by: Alex Rudenko <alexrudenko@chromium.org>
Commit-Queue: Wolfgang Beyer <wolfi@chromium.org>

Author: Piotr Paulski